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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-03-02 21:16:55 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2010-03-10 13:22:29 +0100 |
| commit | 34538ee77b39a12702e0f4c3ed9e8fa2dd5eb92c (patch) | |
| tree | af887af1600921641c92d1ae637274bb11728b28 /arch/x86/kernel/cpu/perf_event_intel.c | |
| parent | perf, x86: Change x86_pmu.{enable,disable} calling convention (diff) | |
| download | linux-dev-34538ee77b39a12702e0f4c3ed9e8fa2dd5eb92c.tar.xz linux-dev-34538ee77b39a12702e0f4c3ed9e8fa2dd5eb92c.zip | |
perf, x86: Use unlocked bitops
There is no concurrency on these variables, so don't use LOCK'ed ops.
As to the intel_pmu_handle_irq() status bit clean, nobody uses that so
remove it all together.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
LKML-Reference: <20100304140100.240023029@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index a84094897799..d87421c3f55b 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -765,7 +765,6 @@ again: for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) { struct perf_event *event = cpuc->events[bit]; - clear_bit(bit, (unsigned long *) &status); if (!test_bit(bit, cpuc->active_mask)) continue; |